TPS53681: Clear Fault through PMBUS

Comi Li

Part Number: TPS53681

Hi team,

What command will be returned if FAULT is cleared to TPS53681 through PMBUS?

After writing the 03 command on the customer's board, NACK is returned. Is it because 53681 did not receive the 03 command?

In addition, does 03H write one byte? Or write two bytes?

BR，

Comi

7 months ago

0 Dhanyasree Prem Sankar 7 months ago

TI__Expert 4260 points

Hi Comi,

03h is a data-less, write-only command. You would have to use the Send Byte option in order to be able to write to it. Refer to the following for more information.

Hope that helps,

Best Regards,

Dhanya Prem

Power management

Power management forum

TPS53681: Clear Fault through PMBUS